From 062a3b82412445cdc61b24040af9c995fae6e246 Mon Sep 17 00:00:00 2001
From: Reid Spencer <rspencer@reidspencer.com>
Date: Wed, 17 Jan 2007 23:20:43 +0000
Subject: [PATCH] For PR1028: Ensure the CBE generates calls to GCC builtins
 for stack_save and stack_restore when it encounters the corresponding
 intrinsics.

Patch by Gordon Henriksen.

llvm-svn: 33312
---
 .../CodeGen/CBackend/2007-01-17-StackSaveNRestore.ll | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 llvm/test/CodeGen/CBackend/2007-01-17-StackSaveNRestore.ll

diff --git a/llvm/test/CodeGen/CBackend/2007-01-17-StackSaveNRestore.ll b/llvm/test/CodeGen/CBackend/2007-01-17-StackSaveNRestore.ll
new file mode 100644
index 000000000000..5694d2a7148a
--- /dev/null
+++ b/llvm/test/CodeGen/CBackend/2007-01-17-StackSaveNRestore.ll
@@ -0,0 +1,12 @@
+; RUN: llvm-as < %s | llc -march=c | grep __builtin_stack_save
+; RUN: llvm-as < %s | llc -march=c | grep __builtin_stack_restore
+; PR1028
+
+declare i8* %llvm.stacksave()
+declare void %llvm.stackrestore(i8*)
+
+define i8* %test() {
+    %s = call i8* %llvm.stacksave()
+    call void %llvm.stackrestore(i8* %s)
+    ret i8* %s
+}